package org.apache.maven.profiles.activation;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.Properties;
import org.apache.maven.model.Activation;
import org.apache.maven.model.ActivationProperty;
import org.apache.maven.model.Profile;
import org.codehaus.plexus.context.Context;
import org.codehaus.plexus.context.ContextException;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable;
import org.codehaus.plexus.util.StringUtils;

@Deprecated
public class SystemPropertyProfileActivator extends DetectedProfileActivator implements Contextualizable {
  private Properties properties;

  public void contextualize(Context context) throws ContextException {
    properties = (Properties) context.get("SystemProperties");
  }

  protected boolean canDetectActivation(Profile profile) {
    return profile.getActivation() != null && profile.getActivation().getProperty() != null;
  }

  public boolean isActive(Profile profile) throws ProfileActivationException {
    Activation activation = profile.getActivation();

    ActivationProperty property = activation.getProperty();

    if (property != null) {
      String name = property.getName();
      boolean reverseName = false;

      if (name == null) {
        throw new ProfileActivationException(
            "The property name is required to activate the profile '" + profile.getId() + "'");
      }

      if (name.startsWith("!")) {
        reverseName = true;
        name = name.substring(1);
      }

      String sysValue = properties.getProperty(name);

      String propValue = property.getValue();
      if (StringUtils.isNotEmpty(propValue)) {
        boolean reverseValue = false;
        if (propValue.startsWith("!")) {
          reverseValue = true;
          propValue = propValue.substring(1);
        }

        // we have a value, so it has to match the system value...
        boolean result = propValue.equals(sysValue);

        if (reverseValue) {
          return !result;
        } else {
          return result;
        }
      } else {
        boolean result = StringUtils.isNotEmpty(sysValue);

        if (reverseName) {
          return !result;
        } else {
          return result;
        }
      }
    }

    return false;
  }

}
